Vibration component and speaker

Abstract

This application discloses a vibration assembly and a loudspeaker. The vibration assembly includes a yoke structure, a diaphragm, a main magnet, and a voice coil. The yoke structure includes multiple nested first magnetically conductive layers and multiple first through holes. The diaphragm is disposed at the top of the yoke structure, and the main magnet is disposed at the bottom of the cavity formed by the diaphragm and the yoke structure, forming an annular magnetic gap with the yoke structure. The voice coil is disposed in the magnetic gap and connected to the diaphragm. By forming the yoke structure through multiple nested first magnetically conductive layers and multiple first through holes, the multi-layered yoke structure replaces the original yoke's supporting and magnetically conductive functions, and the multi-hole design replaces the original single vent combined with a metal mesh, improving heat dissipation, eliminating complex structures, and increasing product efficiency.

Description

Technical Field

[0001] This application relates to the field of audio equipment technology, specifically to a vibration component and a loudspeaker. Prior Technology

[0002] In existing loudspeaker resonator components, vents are often specifically created on the yoke to regulate internal pressure and achieve better sound reproduction. To prevent water and dust from affecting sensitive internal components and to adjust and improve acoustic performance, nylon mesh is typically used to cover the vents, isolating the internal cavity from the external environment. However, because nylon mesh is relatively soft, it can easily cause acoustic resonance when the area is too large. Therefore, for larger vents, metal mesh is used instead of nylon mesh. With the widespread use of loudspeakers, the installation space for resonator components is gradually shrinking, and a single-vent design is insufficient to improve heat dissipation. Furthermore, the additional steps of creating vents and applying mesh make the installation process more complex. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a vibration component and a loudspeaker that improves heat dissipation, eliminates complex structures, and enhances product efficiency.

[0004] In a first aspect, embodiments of this application provide a vibration assembly, including:

[0005] The yoke structure includes multiple nested first magnetically conductive layers. Each first magnetically conductive layer includes a bowl-shaped portion and a connecting portion. The connecting portion is disposed at the top of the bowl-shaped portion and extends laterally outward to form an annular edge. The yoke structure has multiple first through holes, each of which penetrates the bowl-shaped portion of the multiple first magnetically conductive layers.

[0006] A diaphragm is disposed at the top of the yoke structure, the edge of the diaphragm is connected to the connecting portion, and forms a cavity with the yoke structure;

[0007] A main magnet is disposed at the bottom of the cavity, and an annular magnetic gap is formed between the side of the main magnet and the yoke structure.

[0008] A voice coil is disposed in the annular magnetic gap, and the top of the voice coil is connected to the diaphragm.

[0009] Optionally, the dimensions of the plurality of first magnetic conductive layers increase sequentially from the inside to the outside, and the plurality of first through holes are arranged in a matrix on the bowl-shaped portion.

[0010] Optionally, the yoke structure further includes a second magnetic conductive layer, which is a bowl-shaped structure and is nested and attached to the outside of the bowl-shaped portion of the outermost first magnetic conductive layer. The second magnetic conductive layer has a plurality of second through holes corresponding to the plurality of first through holes.

[0011] Optionally, the yoke structure is provided with a clearance groove, which passes through the connecting portion of the plurality of first magnetic layers and connects the outside of the yoke structure with the cavity.

[0012] Optionally, wires are connected to both sides of the voice coil, and the wires extend through the clearance groove.

[0013] Optionally, the vibration assembly further includes a circuit board assembly disposed on the bottom outer side of the yoke structure and electrically connected to the wire.

[0014] Optionally, the vibration assembly further includes a support structure, which is disposed outside the yoke structure. The top of the support structure extends into the clearance groove, and the bottom is connected to the circuit board assembly. The support structure has a channel inside to accommodate the wire.

[0015] Optionally, the main magnet includes a central magnet and a magnetic conductive sheet, with the magnetic conductive sheet disposed at the top of the central magnet.

[0016] Optionally, the vibration assembly further includes an adhesive layer, through which the diaphragm and the connecting portion are connected.

[0017] Secondly, embodiments of this application provide a loudspeaker, including a vibration component.

[0018] This application provides a vibration assembly and a loudspeaker. The vibration assembly includes a yoke structure, a diaphragm, a main magnet, and a voice coil. The yoke structure includes multiple nested first magnetically conductive layers and has multiple first through holes. The diaphragm is disposed at the top of the yoke structure. The main magnet is disposed at the bottom of the cavity formed by the diaphragm and the yoke structure, forming an annular magnetic gap with the yoke structure. The voice coil is disposed in the magnetic gap and connected to the diaphragm. The multiple nested first magnetically conductive layers form the yoke structure, and the multiple first through holes replace the original yoke's supporting and magnetically conductive functions with a multi-layered yoke structure. The multi-hole design replaces the original single vent hole combined with a metal mesh design, improving the heat dissipation of the vibration assembly, eliminating complex structures, and increasing product efficiency. Simple Explanation of the Diagram

[0019] The above and other objects, features and advantages of this application will become clearer from the following description of embodiments with reference to the accompanying drawings, in which: Figure 1 is a top perspective view of a vibration assembly according to an embodiment of this application; Figure 2 is a bottom perspective view of a vibration assembly according to an embodiment of this application; Figure 3 is an exploded view of a vibration component according to an embodiment of this application; Figure 4 is a cross-sectional view of a vibration assembly according to an embodiment of this application; Figure 5 is a partially enlarged view of the yoke structure according to an embodiment of this application; Figure 6 is a top perspective view of a vibration assembly according to an embodiment of this application after the diaphragm has been removed; Figure 7 is a top perspective view of a vibration assembly according to an embodiment of this application after removing the diaphragm and adhesive layer; Figure 8 is a perspective view of a vibration assembly according to an embodiment of this application after removing the diaphragm, adhesive layer and support structure. Implementation

[0020] The present application is described below based on embodiments, but it is not limited to these embodiments. In the detailed description of the present application below, certain specific details are described in detail. Those skilled in the art can fully understand the present application without these details. To avoid obscuring the substance of the present application, well-known methods, processes, flows, elements, and circuits are not described in detail.

[0021] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0022] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] For ease of explanation, spatially related terms such as “inside,” “outside,” “below,” “below,” “lower,” “above,” “upper,” etc., are used herein to describe the relationship between one element or feature illustrated in the figure and another. It will be understood that spatially related terms may be intended to encompass different orientations of the device in use or operation besides those depicted in the figure. For example, if the device in the figure is flipped, an element described as “below” or “below” another element or feature would then be positioned “above” that other element or feature. Thus, the exemplified term “below” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially related descriptive terms used herein should be interpreted accordingly.

[0024] Unless the context explicitly requires it, words such as "including" or "contains" throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, meaning "including but not limited to".

[0025] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0026] A loudspeaker is an electroacoustic transducer, typically comprising a vibrating assembly mainly consisting of a magnet, a coil, and a diaphragm. The coil is connected to the diaphragm and positioned within the magnetic field of the magnet. When alternating current is applied to the coil, the moving charges experience a Lorentz force in the magnetic field, which manifests macroscopically as the coil vibrating under the influence of a periodic Ampere force, further driving the diaphragm to vibrate. The diaphragm's vibration compresses and vibrates the air, generating sound waves of the same frequency, thus converting electrical signals into sound.

[0027] Referring to Figures 1, 2 to 4, the vibration assembly of this embodiment includes a yoke structure 1, a diaphragm 2, a main magnet 3, and a voice coil 4. The yoke structure 1 supports the entire vibration assembly and allows for ventilation between the inside and outside of the assembly, achieving heat dissipation and pressure regulation. Simultaneously, the yoke structure 1 and the main magnet 3 cooperate to form a closed magnetic circuit, shielding the internal magnetic field from interference from external magnetic fields. The diaphragm 2 is located at the top of the yoke structure 1, its edge connecting to and cooperating with the yoke structure 1 to form a cavity. The lower end of the diaphragm 2 is connected to the voice coil 4 and vibrates with the voice coil 4 to produce sound. The main magnet 3 is located at the bottom of the cavity, its side forming an annular magnetic gap with the yoke structure 1. The voice coil 4 is disposed within the annular magnetic gap, with wires 6 connected to its two sides for supplying current to the voice coil 4. When energized, the voice coil 4 vibrates within the magnetic gap, causing the diaphragm 2 to vibrate and produce sound.

[0028] Referring to Figures 3 and 4, the yoke structure 1 includes multiple nested first magnetic conductive layers 11. Since each first magnetic conductive layer 11 is relatively thin, multiple nested layers of the first magnetic conductive layers 11 are required to improve structural strength and magnetic field strength. Depending on the application scenario and installation space of the vibration assembly, the thickness of each single layer of the first magnetic conductive layer 11 and the number of nested layers can be adjusted to achieve the best product performance. Each first magnetic conductive layer 11 includes a bowl-shaped portion 111 and a connecting portion 112. The connecting portion 112 is located at the top of the bowl-shaped portion 111 and extends laterally outward to form an annular edge. The bowl-shaped portion 111 forms a cavity to accommodate the internal structure of the vibration assembly, while the connecting portion 112 connects the yoke structure 1 to other structures. The first magnetic conductive layers 11 are made of soft magnetic materials, such as ferrite or silicon steel sheets. Depending on the actual situation, when forming the nested first magnetic conductive layers 11, multiple layers of soft magnetic materials are stacked and stamped in one go to form the yoke structure 1 with the bowl-shaped portion 111 and the connecting portion 112. Because a multi-layered material is formed by a single stamping process to create a nested structure, the dimensions of the multiple first magnetically conductive layers 11 increase sequentially from the inside to the outside. Each first magnetically conductive layer 11 is tightly bonded to its adjacent first magnetically conductive layers without slippage. In other words, when the diaphragm 2 is connected to the connecting portion 112 of the topmost first magnetically conductive layer 11, the multiple outer first magnetically conductive layers 11 will not detach due to loss of connection, but will be tightly fixed together. The nested first magnetically conductive layers 11 form a yoke structure 1, which can replace the supporting and magnetically conductive functions of the yoke in the prior art. While meeting the required rigidity and magnetic field strength requirements, the yoke structure 1 allows the vibration component to adapt to more application scenarios and allows for flexible adjustments, such as changing the number and thickness of the nested layers, to improve product adaptability.

[0029] Figure 4 is a cross-sectional view of a vibration component according to an embodiment of this application, and Figure 5 is a partial enlarged view of part A of the yoke structure 1 in Figure 4. Referring to Figures 3 to 5, the yoke structure 1 has a plurality of first through holes 12, which are arranged in a matrix on the bowl-shaped portion 111, and each first through hole 12 penetrates the bowl-shaped portion 111 of the plurality of first magnetic conductive layers 11. For each first magnetic conductive layer 11, a plurality of holes arranged in a matrix are opened on its side. Depending on the actual situation, the holes can be opened before or after stamping. When the process of opening the holes before stamping is adopted, the materials of different layers will deform during the stamping process, so there will be deviations in the holes on each first magnetic conductive layer 11 after stamping. The through hole finally formed by the superposition of the holes of multiple first magnetic conductive layers 11 is the first through hole 12. At this time, the area of ​​the first through hole 12 is smaller than the area of ​​the hole opened before stamping. When the process of punching holes is adopted, since the shape of the yoke structure 1 has already been formed, the holes on each layer of the first magnetic conductive layer 11 are interconnected, and the holes at the same position on each layer of the first magnetic conductive layer 11 together constitute a first through hole 12. At this time, the area of ​​the first through hole 12 is equal to the area of ​​the hole punched after punching. By directly punching holes on the yoke structure 1, the problem of single vent holes occupying yoke space and reducing its local rigidity and magnetic field strength in the prior art is avoided. It can also achieve better heat dissipation and effectively eliminate the complex structure of punching single vent holes and applying nylon mesh or metal mesh, thus improving product working efficiency. At the same time, the multi-layer design of the first magnetic conductive layer 11 of the yoke structure 1 can achieve the required magnetic field strength. Therefore, the punching of the first through hole 12 has little impact on the magnetic field strength of the yoke structure 1.

[0030] In some embodiments, referring to FIG3, the yoke structure 1 further includes a second magnetically conductive layer 14. The second magnetically conductive layer 14 has a bowl-shaped structure and is nested and fitted onto the outside of the bowl-shaped portion 111 of the outermost first magnetically conductive layer 11. The top of the opening of the bowl-shaped structure of the second magnetically conductive layer 14 does not have an extended connecting structure, but is in contact with the bottom surface of the connecting portion 112 of the outermost first magnetically conductive layer 11. The second magnetically conductive layer 14 has second through holes 15 corresponding to a plurality of first through holes 12. The first through holes 12 and the second through holes 15 are interconnected, realizing the function of connecting the outside of the vibration component with the cavity. The internal structure of the cavity can dissipate heat and regulate air pressure through the first through holes 12 and the second through holes 15, improving the heat dissipation effect, eliminating complex structures, and improving product working efficiency.

[0031] In some embodiments, a clearance groove 13 is provided on the yoke structure 1, as shown in Figures 3 to 5 and Figure 7. The clearance groove 13 is used to allow the wires 6 and other components that need to pass through the yoke structure 1 to pass through the connecting portions 112 of the multiple first magnetic layers 11. Depending on the actual situation, since the multiple connecting portions 112 extend laterally, are stacked and fit together, and have a certain thickness, the clearance groove 13 can form an opening with a certain height. The clearance groove 13 connects the outside of the yoke structure 1 to the cavity. The wires 6 disposed on both sides of the voice coil 4 extend through the clearance groove 13, making the structure of the vibration assembly more compact, reducing space occupation, and better adapting to various installation requirements.

[0032] In some embodiments, referring to FIG4, the main magnet 3 includes a central magnet 31 and a magnetic guide plate 32. The magnetic guide plate 32 is disposed at the top of the central magnet 31 to help concentrate and guide the magnetic field, thereby improving the performance of the vibration assembly. The main magnet 3 and the yoke structure 1 cooperate to form a closed magnetic circuit and shield external magnetic field interference, ensuring the concentration of the magnetic field within the vibration assembly, enabling the vibration assembly to vibrate stably and adapt to installation requirements under various conditions.

[0033] In some embodiments, the vibration assembly further includes a circuit board assembly 7 and a support structure 8, as shown in Figures 1 and 5. The circuit board assembly 7 is disposed at the bottom outer side of the yoke structure 1 and electrically connected to the wire 6, providing an electrical signal to the voice coil 4 to cause it to vibrate and drive the diaphragm 2 to vibrate, thus driving the vibration assembly to operate. The support structure 8 is disposed on the outside of the yoke structure 1 to provide external support for the yoke structure 1. Depending on the actual situation, the support structure 8 can be a longitudinally supporting structure or other supporting structures, and multiple supports can be provided, symmetrically installed on the outside of the yoke structure 1 or installed along the circumferential direction. The top of the support structure 8 extends into the clearance groove 13, and the bottom is connected to the circuit board assembly 7. A channel 81 is provided inside the support structure 8 to accommodate the wire 6, thus protecting the wiring of the wire 6 outside the yoke structure 1.

[0034] In some embodiments, referring to Figures 6 to 8, the vibration assembly further includes an adhesive layer 5 disposed between the edge of the diaphragm 2 and the connecting portion 112, for connecting the diaphragm 2 and the connecting portion 112. Depending on the actual situation, the adhesive layer 5 can be configured as a closed annular structure. For a portion of the connecting portion 112 with an allowance groove 13, the upper end face of the adhesive layer 5 is connected to the diaphragm 2, and the lower end face contacts the top surface of the support structure 8, accommodating a portion of the wire 6 to pass through, so that the wire 6, the support structure 8, the yoke structure 1, and the edge portion of the diaphragm 2 can be fixed together, increasing structural strength and ensuring the stability of the vibration assembly.

[0035] Referring to Figure 1, the loudspeaker of this embodiment includes the vibration component described above. Depending on the actual situation and product requirements, other structures can be added to the outside of the vibration component to form a complete loudspeaker and improve sound quality through conventional processes. For example, an external enclosure can be added to provide better protection and support for the vibration component and improve sound output characteristics; an external control panel can be connected for user operation and sound effect adjustment; and damping material can be used to reduce reflections and standing waves during sound generation, thereby improving sound quality.

[0036] This application provides a vibration component and a loudspeaker. The vibration component includes a yoke structure, a diaphragm, a main magnet, and a voice coil. The yoke structure includes multiple nested first magnetically conductive layers and multiple first through holes. The diaphragm is disposed at the top of the yoke structure, and the main magnet is disposed at the bottom of the cavity formed by the diaphragm and the yoke structure, forming an annular magnetic gap with the yoke structure. The voice coil is disposed in the magnetic gap and connected to the diaphragm. By forming the yoke structure through multiple nested first magnetically conductive layers and multiple first through holes, the multi-layered yoke structure replaces the original yoke's supporting and magnetically conductive functions. The multi-hole design replaces the original single vent hole combined with a metal mesh, improving heat dissipation, eliminating complex structures, and increasing product efficiency.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0038] 1: Yoke structure 2: Membrane 3: Main magnet 4: Voice coil 5: Adhesive layer 6: Wire 7: Circuit board assembly 8: Support Structure 11: First magnetic layer 12: First through hole 13: Clearance slot 14: Second magnetic layer 15: Second through hole 31: Central Magnet 32: Magnetic Conductor Sheet 81: Channel 111: Bowl-shaped part 112: Connecting part

Claims

1. A vibration assembly comprising: A yoke structure (1) includes multiple nested first magnetic conductive layers (11). The multiple first magnetic conductive layers (11) are stacked and stamped in one go to form the yoke structure (1). Each first magnetic conductive layer (11) includes a bowl-shaped part (111) and a connecting part (112). The connecting part (112) is disposed at the top of the bowl-shaped part (111) and extends laterally outward to form an annular edge. The yoke structure (1) is provided with multiple first through holes (12). Each first through hole (12) penetrates the bowl-shaped part (111) of the multiple first magnetic conductive layers (11). A diaphragm (2) is disposed at the top of the yoke structure (1). The edge of the diaphragm (2) is connected to the connecting part (112) and forms a cavity with the yoke structure (1). A main magnet (3) is disposed at the bottom of the cavity. An annular magnetic gap is formed between the side of the main magnet (3) and the yoke structure (1). The voice coil (4) is disposed in the annular magnetic gap, and the top of the voice coil (4) is connected to the diaphragm (2).

2. The vibration assembly according to claim 1, wherein, The dimensions of the multiple first magnetic conductive layers (11) increase sequentially from the inside to the outside, and the multiple first through holes (12) are arranged in a matrix on the bowl-shaped portion (111).

3. The vibration assembly according to claim 1, wherein, The yoke structure (1) further includes a second magnetic conductive layer (14), which is a bowl-shaped structure and is nested and attached to the outside of the bowl-shaped portion (111) of the outermost first magnetic conductive layer (11). The second magnetic conductive layer (14) has a plurality of second through holes (15) corresponding to a plurality of first through holes (12).

4. The vibration assembly according to claim 1, wherein, The yoke structure (1) is provided with a clearance groove (13), which passes through the connecting part (112) of the plurality of first magnetic conductive layers (11) and connects the outside of the yoke structure (1) with the cavity.

5. The vibration assembly according to claim 4, wherein, The voice coil (4) is connected to wires (6) on both sides, and the wires (6) extend through the clearance groove (13).

6. The vibration assembly according to claim 5, wherein, The vibration assembly also includes a circuit board assembly (7), which is disposed on the bottom outside of the yoke structure (1) and electrically connected to the wire (6).

7. The vibration assembly according to claim 6, wherein, The vibration assembly also includes a support structure (8), which is located outside the yoke structure (1). The top of the support structure (8) extends into the clearance groove (13), and the bottom is connected to the circuit board assembly (7). The support structure (8) has a channel (81) inside to accommodate the wire (6).

8. The vibration assembly according to claim 1, wherein, The main magnet (3) includes a central magnet (31) and a magnetic guide plate (32), with the magnetic guide plate (32) disposed at the top of the central magnet (31).

9. The vibration assembly according to claim 1, wherein, The vibration assembly also includes an adhesive layer (5), through which the diaphragm (2) and the connecting part (112) are connected.

10. A loudspeaker, wherein, The loudspeaker includes a vibration component as described in any one of claims 1 to 9.

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